package a202110.day04;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

/**
 * Fizz Buzz
 * <p>
 * 给你一个整数 n ，找出从 1 到 n 各个整数的 Fizz Buzz 表示，并用字符串数组 answer（下标从 1 开始）返回结果，其中：
 * answer[i] == "FizzBuzz" 如果 i 同时是 3 和 5 的倍数。
 * answer[i] == "Fizz" 如果 i 是 3 的倍数。
 * answer[i] == "Buzz" 如果 i 是 5 的倍数。
 * answer[i] == i 如果上述条件全不满足。
 * <p>
 * 输入：n = 3
 * 输出：["1","2","Fizz"]
 * <p>
 * 输入：n = 5
 * 输出：["1","2","Fizz","4","Buzz"]
 * <p>
 * 输入：n = 15
 * 输出：["1","2","Fizz","4","Buzz","Fizz","7","8","Fizz","Buzz","11","Fizz","13","14","FizzBuzz"]
 * <p>
 * 提示:
 * 1 <= n <= 104
 *
 * @author yousj
 * @since 2021/10/17
 */
public class Main {

    public static void main(String[] args) {
        System.out.println(fizzBuzz1(15));
        System.out.println(fizzBuzz1(18));
    }

    private static List<String> fizzBuzz(int n) {
        return IntStream.range(1, n + 1).mapToObj(a -> a % 15 == 0 ? "FizzBuzz" : a % 3 == 0 ? "Fizz" : a % 5 == 0 ? "Buzz" : String.valueOf(a)).collect(Collectors.toList());
    }

    private static List<String> fizzBuzz1(int n) {
        List<String> list = new ArrayList<>();
        for (int i = 1; i <= n; i++) {
            if (i % 15 == 0) {
                list.add("FizzBuzz");
            } else if (i % 3 == 0) {
                list.add("Fizz");
            } else if (i % 5 == 0) {
                list.add("Buzz");
            } else {
                list.add(i + "");
            }
        }
        return list;
    }
}
